Thursday's decision is an about-face for the Ninth Circuit court. A three-judge panelruled in 2014 that the Second Amendment requires states to allow people to carry guns outside their homes for self-defense.

Lower courts are divided on states' concealed carry restrictions and don't expect the U.S. Supreme Court to weigh in anytime soon. The nation's highest court ruled in 2008 the Second Amendment protects the right to own a gun at home, without mentioning carrying one outside the home. Since then, they've declined to take up the issue.